Finding the Fourth Proportional to 1,475.33, 2,212.83 and 379.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,475.33 : 2,212.83 = 379.72 : x
2. Step 2: Convert to fraction form
   1,475.33/2,212.83 = 379.72/x
3. Step 3: Cross multiply
   1,475.33x = 2,212.83 × 379.72
4. Step 4: Simplify right side
   1,475.33x = 840,255.81
5. Step 5: Solve for x
   x = 840,255.81/1,475.33
6. Step 6: Final answer
   x = 569.54